Engineering Drawing & Design
Author: Delmar Cengage Learning, Inc
Category: Technology & Engineering
For more than 25 years, students have relied on Engineering Drawing and Design for its easy-to-read, comprehensive coverage of drafting and design instruction that complies with industry standards. The Fifth Edition continues its tradition of excellence with a multitude of actual quality industry drawings that demonstrate content coverage and the addition of new problems to the hundreds already on-hand for real-world, practical application. The engineering design process featured in this revision contains new material related to production practices that eliminate waste in all phases from design through manufacturing to marketing and distribution. Also described are practices that seek to improve the quality of process outputs by identifying and removing the causes of defects and minimizing manufacturing variables using quality management methods. An actual product design is taken from concept through manufacturing and to marketing. This is the most comprehensive product design analysis found in any discipline-related textbook. More than 1000 drafting and design problems are found throughout for basic to advanced challenging applications or for use individually and as team projects. New and current features of this textbook are described throughout this Preface. NEW TO THIS EDITION • Expanded history of drafting feature. • A new Standards feature box describes the specifi c standards used as related to chapter content. • New Engineering Design Applications features written by industry professionals. • Updated ASME and discipline-related standards. • Updated CADD standards. • Comprehensive coverage of ASME Y14.5-2009, Dimensioning and Tolerancing, including the most comprehensive geometric dimensioning and tolerancing content found in any textbook. • CADD fi le templates for standard ASME inch and metric drawings, and architectural and civil inch and metric drawings. • New material related to production practices that eliminate waste in all phases from design through manufacturing and to marketing and distribution. • Current practices that seek to improve the quality of process outputs by identifying and removing the causes of defects xii Copyright 2011 Cengage Learning. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part. Due to electronic rights, some third party content may be suppressed from the eBook and/or eChapter(s). Editorial review has deemed that any suppressed content does not materially affect the overall learning experience. Cengage Learning reserves the right to remove additional content at any time if subsequent rights restrictions require it. PREFACE xiii Review Guide. Although this publication is not conclusive with respect to ADDA standards, it should be considered a key reference tool in pursuit of a professional design-drafting career. ENGINEERING DRAWING AND DESIGN CURRICULUM OPTIONS The conversational-style content is easy to read and easy to use. This textbook is comprehensive and can be used in the entire curriculum. The chapters can be used as presented or rearranged to fi t any of the following courses: • Drafting Fundamentals • Engineering Drafting • The Engineering Design Process • Engineering Graphics • Computer-Aided Design and Drafting (CADD) • Mechanical Drafting • Descriptive Geometry • Manufacturing Materials and Processes • Welding Processes and Weldment Drawings • Geometric Dimensioning and Tolerancing (GD&T) • Tool Design • Mechanisms: Linkages, Cams, Gears, and Bearings • Belt and Chain Drives • Pictorial Drawings and Technical Illustration • 3-D CAD and Modeling, Animation, and Virtual Reality • Structural Drafting • Civil Drafting • Industrial Pipe Drafting • Heating, Ventilating, and Air-Conditioning (HVAC) • Pattern Development • Precision Sheet Metal Drafting • Fluid Power • Engineering Charts and Graphs • Electrical Drafting • Electronics Drafting • Drafting Math CHAPTER FORMAT Each chapter provides realistic examples, illustrations, and related tests and problems. The examples illustrate recommended drafting and design presentation based on ASME standards and other related national standards and codes, with actual industry drawings used for reinforcement. The correlated text explains drawing techniques and provides professional tips for skill development. Step-by-step examples provide a logical approach to setting up and completing the drawing problems. Each chapter has the following special features. Engineering Design Application The Engineering Design Application leads the content of every chapter. This section gives you an early understanding of the • The most comprehensive chapter-related PowerPoint® presentation found in any textbook is now available on the Instructor CD. • Detailed course-specifi c syllabi on the Instructor CD. • Chapter-correlated ExamView tests are available for alternate testing opportunities. Engineering Drawing and Design, Fifth Edition, continues the proven success of its previous editions: • Engineering Design Applications. • CADD Applications throughout. • Hundreds of illustrative examples supporting text content. • Actual industry drawing examples to pull chapter content together. • Professional Perspectives. • Math Applications throughout and comprehensive design drafting–related math instruction on the Student CD. • Step-by-step layout methods. • Engineering layout techniques. • Practical and useful appendices. • More than 1000 real-world industry problems throughout. • Chapter tests for examination or review on the Student CD. • ASME drafting and print reading problems on the Student CD. • Comprehensive Instructor CD. Engineering Drawing and Design presents engineering drafting standards developed by the ASME and accredited by the American National Standards Institute (ANSI). This textbook also references International Organization for Standardization (ISO) engineering drafting standards and discipline-specifi c standards when appropriate, including American Welding Society (AWS) standards, the American Society for Testing Materials (ASTM), the American Institute for Steel Construction (AISC), the Construction Specifi cations Institute (CSI), and the United States National CAD Standard (NCS). Also presented, when appropriate, are standards and codes for specifi c engineering fi elds. One important foundation to engineering drawing and design, and the implementation of a common approach to graphics nationwide, is the standardization in all levels of drawing and design instruction. Chapter 1, Introduction to E ngineering Drawing and Design, provides a detailed introduction to drafting standards, and specifi c content-related standards are described throughout this textbook. When you become a professional, this text will serve as a valuable desk reference. AMERICAN DESIGN DRAFTING ASSOCIATION (ADDA)–APPROVED PUBLICATION The content of this text is considered a fundamental component of the design drafting profession by the American Design Drafting Association. This publication covers topics and related material as stated in the ADDA Curriculum Certifi cation Standards and the ADDA Certifi ed Drafter Examination Copyright 2011 Cengage Learning. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part. Due to electronic rights, some third party content may be suppressed from the eBook and/or eChapter(s). Editorial review has deemed that any suppressed content does not materially affect the overall learning experience. Cengage Learning reserves the right to remove additional content at any time if subsequent rights restrictions require it. xiv PREFACE CADD Applications CADD Applications are provided in each chapter to illustrate how the use of CADD is streamlining the design and drafting process. Both 2-D and 3-D CADD Applications demonstrate advances made in discipline-related discussions and examples. type of engineering project that is found in the specifi c design and drafting area discussed in the chapter. T H E E N G I N E E R I N G D E S I G N A P P L I C AT I O N You should always approach an engineering drafting problem in a systematic manner. As an entry-level drafter, create sketches and written notes to plan how you propose to solve the problem. You are also often given engineering sketches and notes to interpret. Engineering sketches can be diffi cult to read. This is typical because engineers normally do not have the time or the skills to prepare a very neat and accurate sketch. Actual engineering sketches can be out of proportion and missing information. Dimensions on engineering sketches often do not comply with ASME or other related standards. Your responsibility is to convert the engineer’s communication into a formal drawing that is accurate and drawn to proper standards. Do as much work as you can based on the given sketches and related information, but ask the engineer for help if you discover issues that are diffi cult to interpret or seem to be inaccurate. Much of the work you do in engineering drafting contains geometry and related geometric characteristics. Many geometric characteristics are basic, such as drawing circles and arcs, but many can be complicated, such as compound curves. Refer to the engineer’s sketch shown in Figure 7.1 as you follow these layout steps: STEP 1 Do all preliminary layout work using construction lines on a construction layer or line type that will not display when fi nished. Begin by establishing the centers of the Ø57 and Ø25.5 circles and then draw the circles. The Ø symbol represents a circle’s diameter. STEP 2 Draw the concentric circles of Ø71.5 and Ø40. STEP 3 Locate and draw the 6X R7.5 arcs and then use tangencies to draw the R3 radii arcs with the outside arcs. STEP 4 Draw the 2X R7 arcs tangent to the large inside arcs. STEP 5 Draw the centerlines for the 6X Ø7 circles and then draw the circles from the established center points. Draw all centerlines on the appropriate layer, such as the CENTERLINE layer. STEP 6 Complete all visible object lines by trimming and extending as needed. Make sure all visible lines are on the appropriate layer, such as the OBJECT layer. Erase unwanted features. Turn off or freeze the construction layer. Figure 7.2 shows the fi nished drawing.